prosody
d94aacb2771a
plugins/mod_component.lua

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plugins/mod_component.lua @ 3587:d94aacb2771a

componentmanager, hostmanager, modulemanager, mod_component: Got rid of the useless hosts[*].connected property.
author Waqas Hussain <waqas20@gmail.com>
date Wed, 10 Nov 2010 03:39:38 +0500
parent 3581:3f3f8227ba76
child 3604:3e89f0509967
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9 if module:get_host_type() ~= "component" then
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10 error("Don't load mod_component manually, it should be for a component, please see http://prosody.im/doc/components", 0);
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11 end
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12
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13 local hosts = _G.hosts;
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14
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15 local t_concat = table.concat;
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16
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17 local config = require "core.configmanager";
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18 local cm_register_component = require "core.componentmanager".register_component;
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19 local cm_deregister_component = require "core.componentmanager".deregister_component;
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20 local sha1 = require "util.hashes".sha1;
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21 local st = require "util.stanza";
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22
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23 local log = module._log;
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24
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25 local main_session, send;
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26
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27 local function on_destroy(session, err)
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28 if main_session == session then
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29 main_session = nil;
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30 send = nil;
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31 session.on_destroy = nil;
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32 end
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33 end
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34
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35 local function handle_stanza(event)
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36 local stanza = event.stanza;
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37 if send then
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38 stanza.attr.xmlns = nil;
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39 send(stanza);
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40 else
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41 log("warn", "Stanza being handled by default component; bouncing error for: %s", stanza:top_tag());
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42 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
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43 event.origin.send(st.error_reply(stanza, "wait", "service-unavailable", "Component unavailable"));
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44 end
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45 end
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46 end
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47
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48 module:hook("iq/bare", handle_stanza);
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49 module:hook("message/bare", handle_stanza);
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50 module:hook("presence/bare", handle_stanza);
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51 module:hook("iq/full", handle_stanza);
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52 module:hook("message/full", handle_stanza);
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53 module:hook("presence/full", handle_stanza);
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54 module:hook("iq/host", handle_stanza);
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55 module:hook("message/host", handle_stanza);
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56 module:hook("presence/host", handle_stanza);
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57
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58 cm_register_component(module.host, function() end);
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59
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60 --- Handle authentication attempts by components
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61 function handle_component_auth(event)
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62 local session, stanza = event.origin, event.stanza;
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63
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64 if session.type ~= "component" then return; end
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65 if main_session == session then return; end
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66
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67 log("info", "Handling component auth");
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68 if (not session.host) or #stanza.tags > 0 then
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69 (session.log or log)("warn", "Component handshake invalid");
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70 session:close("not-authorized");
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71 return true;
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72 end
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73
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74 local secret = config.get(session.host, "core", "component_secret");
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75 if not secret then
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76 (session.log or log)("warn", "Component attempted to identify as %s, but component_secret is not set", session.host);
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77 session:close("not-authorized");
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78 return true;
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79 end
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80
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81 local supplied_token = t_concat(stanza);
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82 local calculated_token = sha1(session.streamid..secret, true);
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83 if supplied_token:lower() ~= calculated_token:lower() then
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84 log("info", "Component for %s authentication failed", session.host);
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85 session:close{ condition = "not-authorized", text = "Given token does not match calculated token" };
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86 return true;
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87 end
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88
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89
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90 -- Authenticated now
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91 log("info", "Component authenticated: %s", session.host);
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92
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93 session.component_validate_from = module:get_option_boolean("validate_from_addresses") ~= false;
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94
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95 -- If component not already created for this host, create one now
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96 if not main_session then
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97 send = session.send;
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98 main_session = session;
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99 session.on_destroy = on_destroy;
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100 log("info", "Component successfully registered");
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101 else
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102 log("error", "Multiple components bound to the same address, first one wins (TODO: Implement stanza distribution)");
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103 session:close{ condition = "conflict", text = "Component already connected" };
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104 return true;
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105 end
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106
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107 -- Signal successful authentication
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108 session.send(st.stanza("handshake"));
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109 return true;
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110 end
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111
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112 module:hook("stanza/jabber:component:accept:handshake", handle_component_auth);